[RE-wrenches] Insolation calc anyone ;)

[Ray]

Is it possible that there was a lightning strike nearby, and the light 
flash created the high max power readings?    I'm calculating almost 
1400 w/ m2, (3075/2205 x 1000 w/M2) which is high, but not insanely 
high.  They used to use flash testing to rate modules, so a fairly 
instantaneous flash can do it.

Ray Walters
Remote Solar
303 505-8760

On 11/21/18 11:10 PM, bruce at willpowerelect.com wrote:
> Compadres,
>
> I have 4 identical arrays of 3 strings of 3 Solarworld SW 245 mono 
> (2010 model) to FM80s. When designing, not exceeding 150 voc was 
> critical. No record temp data available. Location ~ 4,000' Pacific 
> Northwest. Recently replaced an FM80 with 6 blown FETs showing max 
> power at 3075 watts! This from a 2205 watt array into a 24 volt 
> battery. Max historical voc is ~120. My guess at record low temp is 
> -10F. tc%/ºC MPP doesn't get anywhere close. What would the WM2 need 
> to be in order to achieve 3075 watts on a 2205 watt array? BTW, 2 of 
> the four original chargers are still working fine and one of them also 
> shows 3075 watts max power. Edge of cloud effect against snow field at 
> bottom of array?
>
> Cheers,
>
> Bruce Fiero-RMI
>
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